how do you create a reversing Ring Counter ?

B

Bloodninja

New Member

• Apr 19, 2012

• #1

Hello everyone,

I was wondering..

if we have a Ring Counter its supposed to go through this sequence 1000, 0100, 0010, 0001
but how do you make it go back instead of resetting to 1000 ?

like 1000, 0100, 0010, 0001, 0010, 0100, 1000

 

Last edited: Apr 19, 2012

ericgibbs

Well-Known Member

Most Helpful Member

• Apr 19, 2012

• #2

Hi
I would use a right/left 4 bit shift register.

 

B

Bloodninja

New Member

• Apr 19, 2012

• #3

yes, but what if we wanted to make it generate the sequence i mentioned above automatically ?

 

B

Bloodninja

New Member

• Apr 19, 2012

• #4

hmmm...do we just connect the output to the input just like a ring counter configuration ?

 

K

KMoffett

Well-Known Member

• Apr 20, 2012

• #5

Google: Knight Rider light circuit

Ken

 

B

Bloodninja

New Member

• Apr 20, 2012

• #6

Cheers KMoffett !

I expected it to be a 4017 decade counter. I was just thinking of making my own circuit made of flip flops synchronous counter, i failed to design it because the states of the counter have to reverse direction...

 

K

KMoffett

Well-Known Member

• Apr 20, 2012

• #7

For 4 or 5 outputs, how about a 4017 and diode or logic ORing the outputs?

Ken